Ahousehold refrigerator that has a power input of 200 w and a cop of 1.3 is to cool 7 cucumbers, 0.3 kg each, to 9 °c. if the cucumbers are initially at 25°c, determine how long it will take for the refrigerator to cool them. the cucumbers can be treated as water whose specific heat is 4.2 kj/kg-°c. a. draw a schematic representation of the system with all the energy interactions involved. (3pts) b. calculate the amount of heat that needs to be removed from the cucumbers, in kl. (hint: use the specific heat) (3 pts) c. calculate the heat rejection rate (qh) of the refrigerator. (3 pts) d. calculate the time required to cool the cucumbers at the desired temperature.